In this Wednesday, July 19, 2017 photo, Michael Grahek, of Los Angeles Department of Water and Power, walks in the Maclay Highline tunnel that is being reconnected to the aqueduct in Sylmar, in Los Angeles. The tunnel is part of the Maclay Highline system of channels and tunnels that supplied water to homes and farms in Sylmar and the Sunland-Tujunga area. Los Angeles is restoring the century-old water tunnel to capture runoff from the Sierra Nevada, which had a record snowfall this winter after years of drought. (Hans Gutknecht/Los Angeles Daily News via AP)
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